1 // <system_error> implementation file 2 3 // Copyright (C) 2007-2020 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the 7 // terms of the GNU General Public License as published by the 8 // Free Software Foundation; either version 3, or (at your option) 9 // any later version. 10 11 // This library is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 16 // Under Section 7 of GPL version 3, you are granted additional 17 // permissions described in the GCC Runtime Library Exception, version 18 // 3.1, as published by the Free Software Foundation. 19 20 // You should have received a copy of the GNU General Public License and 21 // a copy of the GCC Runtime Library Exception along with this program; 22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 // <http://www.gnu.org/licenses/>. 24 25 26 #define _GLIBCXX_USE_CXX11_ABI 1 27 #define __sso_string __sso_stringxxx 28 #include <cstring> 29 #include <system_error> 30 #include <bits/functexcept.h> 31 #include <limits> 32 #include <errno.h> 33 #undef __sso_string 34 35 namespace 36 { 37 using std::string; 38 39 struct generic_error_category : public std::error_category 40 { 41 virtual const char* name__anon139e6fbe0111::generic_error_category42 name() const noexcept 43 { return "generic"; } 44 45 _GLIBCXX_DEFAULT_ABI_TAG 46 virtual string message__anon139e6fbe0111::generic_error_category47 message(int i) const 48 { 49 // XXX locale issues: how does one get or set loc. 50 // _GLIBCXX_HAVE_STRERROR_L, strerror_l(i, cloc) 51 return string(strerror(i)); 52 } 53 }; 54 55 struct system_error_category : public std::error_category 56 { 57 virtual const char* name__anon139e6fbe0111::system_error_category58 name() const noexcept 59 { return "system"; } 60 61 _GLIBCXX_DEFAULT_ABI_TAG 62 virtual string message__anon139e6fbe0111::system_error_category63 message(int i) const 64 { 65 // XXX locale issues: how does one get or set loc. 66 // _GLIBCXX_HAVE_STRERROR_L, strerror_l(i, cloc) 67 return string(strerror(i)); 68 } 69 70 virtual std::error_condition default_error_condition__anon139e6fbe0111::system_error_category71 default_error_condition(int ev) const noexcept 72 { 73 // Use generic category for all known POSIX errno values (including zero) 74 // and system category otherwise. 75 switch (ev) 76 { 77 // List of errno macros from [cerrno.syn]. 78 // C11 only defines EDOM, EILSEQ and ERANGE, the rest are from POSIX. 79 // They expand to integer constant expressions with type int, 80 // and distinct positive values, suitable for use in #if directives. 81 // POSIX adds more macros (but they're not defined on all targets, 82 // see config/os/*/error_constants.h), and POSIX allows 83 // EAGAIN == EWOULDBLOCK and ENOTSUP == EOPNOTSUPP. 84 85 #ifdef E2BIG 86 case E2BIG: 87 #endif 88 #ifdef EACCES 89 case EACCES: 90 #endif 91 #ifdef EADDRINUSE 92 case EADDRINUSE: 93 #endif 94 #ifdef EADDRNOTAVAIL 95 case EADDRNOTAVAIL: 96 #endif 97 #ifdef EAFNOSUPPORT 98 case EAFNOSUPPORT: 99 #endif 100 #ifdef EAGAIN 101 case EAGAIN: 102 #endif 103 #ifdef EALREADY 104 case EALREADY: 105 #endif 106 #ifdef EBADF 107 case EBADF: 108 #endif 109 #ifdef EBADMSG 110 case EBADMSG: 111 #endif 112 #ifdef EBUSY 113 case EBUSY: 114 #endif 115 #ifdef ECANCELED 116 case ECANCELED: 117 #endif 118 #ifdef ECHILD 119 case ECHILD: 120 #endif 121 #ifdef ECONNABORTED 122 case ECONNABORTED: 123 #endif 124 #ifdef ECONNREFUSED 125 case ECONNREFUSED: 126 #endif 127 #ifdef ECONNRESET 128 case ECONNRESET: 129 #endif 130 #ifdef EDEADLK 131 case EDEADLK: 132 #endif 133 #ifdef EDESTADDRREQ 134 case EDESTADDRREQ: 135 #endif 136 case EDOM: 137 #ifdef EEXIST 138 case EEXIST: 139 #endif 140 #ifdef EFAULT 141 case EFAULT: 142 #endif 143 #ifdef EFBIG 144 case EFBIG: 145 #endif 146 #ifdef EHOSTUNREACH 147 case EHOSTUNREACH: 148 #endif 149 #ifdef EIDRM 150 case EIDRM: 151 #endif 152 case EILSEQ: 153 #ifdef EINPROGRESS 154 case EINPROGRESS: 155 #endif 156 #ifdef EINTR 157 case EINTR: 158 #endif 159 #ifdef EINVAL 160 case EINVAL: 161 #endif 162 #ifdef EIO 163 case EIO: 164 #endif 165 #ifdef EISCONN 166 case EISCONN: 167 #endif 168 #ifdef EISDIR 169 case EISDIR: 170 #endif 171 #ifdef ELOOP 172 case ELOOP: 173 #endif 174 #ifdef EMFILE 175 case EMFILE: 176 #endif 177 #ifdef EMLINK 178 case EMLINK: 179 #endif 180 #ifdef EMSGSIZE 181 case EMSGSIZE: 182 #endif 183 #ifdef ENAMETOOLONG 184 case ENAMETOOLONG: 185 #endif 186 #ifdef ENETDOWN 187 case ENETDOWN: 188 #endif 189 #ifdef ENETRESET 190 case ENETRESET: 191 #endif 192 #ifdef ENETUNREACH 193 case ENETUNREACH: 194 #endif 195 #ifdef ENFILE 196 case ENFILE: 197 #endif 198 #ifdef ENOBUFS 199 case ENOBUFS: 200 #endif 201 #ifdef ENODATA 202 case ENODATA: 203 #endif 204 #ifdef ENODEV 205 case ENODEV: 206 #endif 207 #ifdef ENOENT 208 case ENOENT: 209 #endif 210 #ifdef ENOEXEC 211 case ENOEXEC: 212 #endif 213 #ifdef ENOLCK 214 case ENOLCK: 215 #endif 216 #ifdef ENOLINK 217 case ENOLINK: 218 #endif 219 #ifdef ENOMEM 220 case ENOMEM: 221 #endif 222 #ifdef ENOMSG 223 case ENOMSG: 224 #endif 225 #ifdef ENOPROTOOPT 226 case ENOPROTOOPT: 227 #endif 228 #ifdef ENOSPC 229 case ENOSPC: 230 #endif 231 #ifdef ENOSR 232 case ENOSR: 233 #endif 234 #ifdef ENOSTR 235 case ENOSTR: 236 #endif 237 #ifdef ENOSYS 238 case ENOSYS: 239 #endif 240 #ifdef ENOTCONN 241 case ENOTCONN: 242 #endif 243 #ifdef ENOTDIR 244 case ENOTDIR: 245 #endif 246 #if defined ENOTEMPTY && (!defined EEXIST || ENOTEMPTY != EEXIST) 247 // AIX sometimes uses the same value for EEXIST and ENOTEMPTY 248 case ENOTEMPTY: 249 #endif 250 #ifdef ENOTRECOVERABLE 251 case ENOTRECOVERABLE: 252 #endif 253 #ifdef ENOTSOCK 254 case ENOTSOCK: 255 #endif 256 #if defined ENOTSUP && (!defined ENOSYS || ENOTSUP != ENOSYS) 257 // zTPF uses the same value for ENOSYS and ENOTSUP 258 case ENOTSUP: 259 #endif 260 #ifdef ENOTTY 261 case ENOTTY: 262 #endif 263 #ifdef ENXIO 264 case ENXIO: 265 #endif 266 #if defined EOPNOTSUPP && (!defined ENOTSUP || EOPNOTSUPP != ENOTSUP) 267 case EOPNOTSUPP: 268 #endif 269 #ifdef EOVERFLOW 270 case EOVERFLOW: 271 #endif 272 #ifdef EOWNERDEAD 273 case EOWNERDEAD: 274 #endif 275 #ifdef EPERM 276 case EPERM: 277 #endif 278 #ifdef EPIPE 279 case EPIPE: 280 #endif 281 #ifdef EPROTO 282 case EPROTO: 283 #endif 284 #ifdef EPROTONOSUPPORT 285 case EPROTONOSUPPORT: 286 #endif 287 #ifdef EPROTOTYPE 288 case EPROTOTYPE: 289 #endif 290 case ERANGE: 291 #ifdef EROFS 292 case EROFS: 293 #endif 294 #ifdef ESPIPE 295 case ESPIPE: 296 #endif 297 #ifdef ESRCH 298 case ESRCH: 299 #endif 300 #ifdef ETIME 301 case ETIME: 302 #endif 303 #ifdef ETIMEDOUT 304 case ETIMEDOUT: 305 #endif 306 #ifdef ETXTBSY 307 case ETXTBSY: 308 #endif 309 #if defined EWOULDBLOCK && (!defined EAGAIN || EWOULDBLOCK != EAGAIN) 310 case EWOULDBLOCK: 311 #endif 312 #ifdef EXDEV 313 case EXDEV: 314 #endif 315 case 0: 316 return std::error_condition(ev, std::generic_category()); 317 318 /* Additional system-dependent mappings from non-standard error codes 319 * to one of the POSIX values above would go here, e.g. 320 case EBLAH: 321 return std::error_condition(EINVAL, std::generic_category()); 322 */ 323 324 default: 325 return std::error_condition(ev, std::system_category()); 326 } 327 } 328 }; 329 330 const generic_error_category generic_category_instance{}; 331 const system_error_category system_category_instance{}; 332 } 333 334 namespace std _GLIBCXX_VISIBILITY(default) 335 { 336 _GLIBCXX_BEGIN_NAMESPACE_VERSION 337 338 void __throw_system_error(int __i)339 __throw_system_error(int __i __attribute__((unused))) 340 { 341 _GLIBCXX_THROW_OR_ABORT(system_error(error_code(__i, generic_category()))); 342 } 343 344 error_category::~error_category() noexcept = default; 345 346 const error_category& system_category()347 _V2::system_category() noexcept { return system_category_instance; } 348 349 const error_category& generic_category()350 _V2::generic_category() noexcept { return generic_category_instance; } 351 352 system_error::~system_error() noexcept = default; 353 354 error_condition default_error_condition(int __i) const355 error_category::default_error_condition(int __i) const noexcept 356 { return error_condition(__i, *this); } 357 358 bool equivalent(int __i,const error_condition & __cond) const359 error_category::equivalent(int __i, 360 const error_condition& __cond) const noexcept 361 { return default_error_condition(__i) == __cond; } 362 363 bool equivalent(const error_code & __code,int __i) const364 error_category::equivalent(const error_code& __code, int __i) const noexcept 365 { return *this == __code.category() && __code.value() == __i; } 366 367 error_condition default_error_condition() const368 error_code::default_error_condition() const noexcept 369 { return category().default_error_condition(value()); } 370 371 #if _GLIBCXX_USE_CXX11_ABI 372 // Return error_category::message() as a COW string 373 __cow_string _M_message(int i) const374 error_category::_M_message(int i) const 375 { 376 string msg = this->message(i); 377 return {msg.c_str(), msg.length()}; 378 } 379 #endif 380 381 _GLIBCXX_END_NAMESPACE_VERSION 382 } // namespace 383